Brake warning light...

maxxpump · 31st July 2015, 13:15

Hello all,

I had my brake pads and disks replaced about four months ago and they have been working fantastic! (Pagid disks and pads all around, might be cheap but has already stopped us on an emergency stop at 65 MPH, with hardly any drift!).

The other day without going over a bump or pothole the brake light came on, but goes out every time we reset the car and will then take maybe half an hour of driving before it comes on. I'm wondering why is this happening, I know it come on with a break in the circuit, but for it to be intermittent like this I'm lost for an answer!

The pads last time were not to far down and were replaced as a preventive measure! the sensors worked before and didn't trip the light and thinking of this I am stumped to what is going on.

Are there any connectors where I can squirt some contact spray in, if there are...were are they?

Is this just a sensor fault, cabling fault or could it be anything else?

Thank you for your time guys, I much appropriate it and you guys as always have helped me a great deal and am humbly grateful for you advice.

My MOT come up in just over a week and know the assessors look for lights that come on and can fail it over that.

I also have the washer bottle light which also comes on intermittently, so will buy a new sensor for this, but am unsure also what sensor to buy for it?

Have a nice day people and hope everyone's enjoying the sun, where they can!

Hopefully I can get these things sorted in the next week and give my car a greater chance of getting through it's MOT!

RogerHeinz57 · 31st July 2015, 13:34

Hi, The pad warning light will come on for a few reasons, but overall the two main ones are -
The pads are low (Not in this case)
There is a contact or break where it should'nt be.

First of all I would check to make sure the under bonnet connection plug is firmly together (O/S/F next to the blue ABS connector) Whilst doing this check to see if any of the wiring has rubbed the insulation away and causing an earthing.
If this is all ok, I would be removing the O/S/F wheel, and making sure the push-in part of the sensor is fully home inside the inner pad material backing, sometimes these can work loose. BUT .... Be careful if you remove the sensor as there is a metal clip that forms part of the set-up. It is tiny and they are very easy to lose, it is "U" shaped with a lug at the top of each leg. This may be missing and allowing the sensor to wobble about and cause the warning system to go live. The sensors are all on the O/S front and rear and attach in exactly the same fashion.
Also to test which end is playing up, you could bridge the two contacts inside the Black plug to the car to make the light go out!
I hope this helps you and if you would like one sent down, just PM me, also have the reed switch for the screenwash tank if you would like it.

Take good care, and good luck with this and please keep us up to date on your progress sorting these issues out.

Cheers JohnH.

maxxpump · 31st July 2015, 14:06

Quote:

Originally Posted by John H

Hi, The pad warning light will come on for a few reasons, but overall the two main ones are -
The pads are low (Not in this case)
There is a contact or break where it should'nt be.

First of all I would check to make sure the under bonnet connection plug is firmly together (O/S/F next to the blue ABS connector) Whilst doing this check to see if any of the wiring has rubbed the insulation away and causing an earthing.
If this is all ok, I would be removing the O/S/F wheel, and making sure the push-in part of the sensor is fully home inside the inner pad material backing, sometimes these can work loose. BUT .... Be careful if you remove the sensor as there is a metal clip that forms part of the set-up. It is tiny and they are very easy to lose, it is "U" shaped with a lug at the top of each leg. This may be missing and allowing the sensor to wobble about and cause the warning system to go live. The sensors are all on the O/S front and rear and attach in exactly the same fashion.
Also to test which end is playing up, you could bridge the two contacts inside the Black plug to the car to make the light go out!
I hope this helps you and if you would like one sent down, just PM me, also have the reed switch for the screenwash tank if you would like it.

Take good care, and good luck with this and please keep us up to date on your progress sorting these issues out.

Cheers JohnH.

Thanks John, I will give it a look in a bit, maybe tomorrow afternoon. Thanks for the suggestions and will see, but will report back in abit

roverbarmy · 31st July 2015, 16:28

Not sure, but some cars have a low level warning on the brake fluid which gives the same warning light. Or handbrake switch? Worth a check?
Mike

31st July 2015, 13:15	#1
maxxpump Posted a thing or two Rover 75 CDT Join Date: Aug 2014 Location: Brighton Posts: 1,786 Thanks: 215 Thanked 244 Times in 205 Posts	Brake warning light... Hello all, I had my brake pads and disks replaced about four months ago and they have been working fantastic! (Pagid disks and pads all around, might be cheap but has already stopped us on an emergency stop at 65 MPH, with hardly any drift!). The other day without going over a bump or pothole the brake light came on, but goes out every time we reset the car and will then take maybe half an hour of driving before it comes on. I'm wondering why is this happening, I know it come on with a break in the circuit, but for it to be intermittent like this I'm lost for an answer! The pads last time were not to far down and were replaced as a preventive measure! the sensors worked before and didn't trip the light and thinking of this I am stumped to what is going on. Are there any connectors where I can squirt some contact spray in, if there are...were are they? Is this just a sensor fault, cabling fault or could it be anything else? Thank you for your time guys, I much appropriate it and you guys as always have helped me a great deal and am humbly grateful for you advice. My MOT come up in just over a week and know the assessors look for lights that come on and can fail it over that. I also have the washer bottle light which also comes on intermittently, so will buy a new sensor for this, but am unsure also what sensor to buy for it? Have a nice day people and hope everyone's enjoying the sun, where they can! Hopefully I can get these things sorted in the next week and give my car a greater chance of getting through it's MOT! __________________ Mods done: 160 upgrade, EGR bypass, Viton "O" rings, Fitted 16" unions, cleaned manifold, uprated air filter, fog lights, better bulbs, upgraded ICE and full speaker set up.

31st July 2015, 16:28	#4
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,056 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	Not sure, but some cars have a low level warning on the brake fluid which gives the same warning light. Or handbrake switch? Worth a check? Mike __________________ Oil in my veins!

31st July 2015, 13:34	#2
RogerHeinz57 I really should get out more....... A Reasonably Priced Car Join Date: Jan 2014 Location: Burton Latimer Posts: 2,530 Thanks: 408 Thanked 1,064 Times in 712 Posts	Hi, The pad warning light will come on for a few reasons, but overall the two main ones are - The pads are low (Not in this case) There is a contact or break where it should'nt be. First of all I would check to make sure the under bonnet connection plug is firmly together (O/S/F next to the blue ABS connector) Whilst doing this check to see if any of the wiring has rubbed the insulation away and causing an earthing. If this is all ok, I would be removing the O/S/F wheel, and making sure the push-in part of the sensor is fully home inside the inner pad material backing, sometimes these can work loose. BUT .... Be careful if you remove the sensor as there is a metal clip that forms part of the set-up. It is tiny and they are very easy to lose, it is "U" shaped with a lug at the top of each leg. This may be missing and allowing the sensor to wobble about and cause the warning system to go live. The sensors are all on the O/S front and rear and attach in exactly the same fashion. Also to test which end is playing up, you could bridge the two contacts inside the Black plug to the car to make the light go out! I hope this helps you and if you would like one sent down, just PM me, also have the reed switch for the screenwash tank if you would like it. Take good care, and good luck with this and please keep us up to date on your progress sorting these issues out. Cheers JohnH.